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Update DB table structures as required during plugin upgrade

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e107steved
2008-08-12 20:26:53 +00:00
parent 3fecc154de
commit 913db4e760
3 changed files with 120 additions and 45 deletions
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67
e107_handlers/db_table_admin_class.php
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@@ -11,8 +11,8 @@
| GNU General Public License (http://gnu.org).
|
| $Source: /cvs_backup/e107_0.8/e107_handlers/db_table_admin_class.php,v $
| $Revision: 1.4 $
| $Date: 2008-06-16 20:48:47 $
| $Revision: 1.5 $
| $Date: 2008-08-12 20:26:43 $
| $Author: e107steved $
+----------------------------------------------------------------------------+
*/
@@ -447,6 +447,69 @@ class db_table_admin
$text .= "</table><br /><br />--Ends--<br />";
return $text;
}
//--------------------------------------------------
// Update a table to required structure
//--------------------------------------------------
// $newStructure is an array element as returned from get_table_def()
// If $mlUpdate is TRUE, applies same query to all tables of same language
// Return TRUE on success.
// Return text string if $justCheck is TRUE and changes needed
// Return text string on most failures
// Return FALSE on certain failures (generally indicative of code/system problems)
function update_table_structure($newStructure, $justCheck=FALSE, $makeNewifNotExist = TRUE, $mlUpdate = FALSE)
{
global $sql;
// Pull out table name
$tableName = $newStructure[1];
if (!$sql->db_Table_exists($tableName))
{
if ($makeNewifNotExist === FALSE) return 'Table doesn\'t exist';
if ($sql->db_Select_gen($newStructure[0])) return TRUE;
return 'Error creating new table: '.$tableName;
}
$reqFields = $this->parse_field_defs($newStructure[2]); // Required field definitions
if (E107_DBG_FILLIN8) echo "Required table structure: <br />".$this->make_field_list($reqFields);
if ((($actualDefs = $this->get_current_table($tableName)) === FALSE) || !is_array($actualDefs)) // Get actual table definition (Adds current default prefix)
{
return "Couldn't get table structure: {$tableName}<br />";
}
else
{
// echo $db_parser->make_table_list($actual_defs);
$actualFields = $this->parse_field_defs($actualDefs[0][2]); // Split into field definitions
if (E107_DBG_FILLIN8) echo 'Actual table structure: <br />'.$this->make_field_list($actualFields);
$diffs = $this->compare_field_lists($reqFields,$actualFields); // Work out any differences
if (count($diffs[0]))
{ // Changes needed
if ($justCheck) return 'Field changes rqd; table: '.$tableName.'<br />';
// Do the changes here
if (E107_DBG_FILLIN8) echo "List of changes found:<br />".$this->make_changes_list($diffs);
$qry = 'ALTER TABLE '.MPREFIX.$tableName.' '.implode(', ',$diffs[1]);
if (E107_DBG_FILLIN8) echo 'Update Query used: '.$qry.'<br />';
if ($mlUpdate)
{
$ret = $sql->db_Query_all($qry); // Returns TRUE = success, FALSE = fail
}
else
{
$ret = $sql->db_Select_gen($qry);
}
if ($ret === FALSE)
{
return $sql->dbError() ;
}
}
return TRUE; // Success even if no changes required
}
return FALSE;
}
}